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Improved Method for Calculating Minimum Miscibility Pressure for Gas Flooding

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Chemistry and Technology of Fuels and Oils Aims and scope

Minimum miscibility pressure (MMP) is a key parameter determining the feasibility of complete miscibility of oil and gas. Using a slim-tube model, we have experimentally established the MMP for gas and six oil samples. We propose an improved mathematical model for determining the MMP, designed using 97 groups of MMP data for hydrocarbons (18 groups for lean-gas flooding and 79 groups for rich-gas flooding). The model obtained is universal and is a function of the reservoir temperature, the average molecular weight of the C 7+ oil fraction, and the mole fraction of volatile components (CH 4 and N 2 ) and intermediate components (CO 2 , H 2 S, C 2 –C 6 ) in the crude oil and in the injected gas. We compare our proposed model with widely used empirical models, showing considerable convergence between the experimental data and the calculations; the percentage average absolute relative error (%AARE) is 7.11%.

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This work was done with the financial support of the National Science and Technology Major Project of China (No. 2011ZX05016-005-2) and the National Natural Science Foundation of China (No. 50604011).

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Authors and Affiliations

  1. College of Energy Resource, Chengdu University of Technology, Chengdu, Sichuan Province, China

    Dali Hou, Yongming He, Pingya Luo, Lei Sun, Yong Tang & Yi Pan

  2. The State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan Province, China

    Dali Hou & Yongming He

  3. The State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation Engineering, Southwest Petroleum University, Chengdu, Sichuan Province, China

    Dali Hou

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  1. Dali Hou
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  2. Yongming He
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Correspondence to Dali Hou.

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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 3, pp. 19 – 23, May – June, 2015.

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Hou, D., He, Y., Luo, P. et al. Improved Method for Calculating Minimum Miscibility Pressure for Gas Flooding. Chem Technol Fuels Oils 51, 257–267 (2015). https://doi.org/10.1007/s10553-015-0600-2

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